From: Al Viro <viro@zeniv.linux.org.uk>
To: Song Liu <song@kernel.org>
Cc: bpf@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org,
linux-security-module@vger.kernel.org, kernel-team@meta.com,
andrii@kernel.org, eddyz87@gmail.com, ast@kernel.org,
daniel@iogearbox.net, martin.lau@linux.dev, brauner@kernel.org,
jack@suse.cz, kpsingh@kernel.org, mattbobrowski@google.com,
amir73il@gmail.com, repnop@google.com, jlayton@kernel.org,
josef@toxicpanda.com, mic@digikod.net, gnoack@google.com
Subject: Re: [PATCH bpf-next 3/4] bpf: Introduce path iterator
Date: Wed, 28 May 2025 23:37:24 +0100 [thread overview]
Message-ID: <20250528223724.GE2023217@ZenIV> (raw)
In-Reply-To: <20250528222623.1373000-4-song@kernel.org>
On Wed, May 28, 2025 at 03:26:22PM -0700, Song Liu wrote:
> Introduce a path iterator, which reliably walk a struct path.
No, it does not. If you have no external warranty that mount
*and* dentry trees are stable, it's not reliable at all.
And I'm extremely suspicious regarding the validity of anything
that pokes around in mount trees. There is a very good reason
struct mount is *not* visible in include/linux/*.h
next prev parent reply other threads:[~2025-05-28 22:37 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-05-28 22:26 [PATCH bpf-next 0/4] bpf path iterator Song Liu
2025-05-28 22:26 ` [PATCH bpf-next 1/4] namei: Introduce new helper function path_parent() Song Liu
2025-05-28 22:26 ` [PATCH bpf-next 2/4] landlock: Use path_parent() Song Liu
2025-05-31 13:51 ` Tingmao Wang
2025-06-02 13:36 ` Song Liu
2025-06-03 0:10 ` Song Liu
2025-06-03 12:47 ` Mickaël Salaün
2025-06-02 17:35 ` Mickaël Salaün
2025-06-02 22:56 ` Tingmao Wang
2025-05-28 22:26 ` [PATCH bpf-next 3/4] bpf: Introduce path iterator Song Liu
2025-05-28 22:37 ` Al Viro [this message]
2025-05-29 11:58 ` Jan Kara
2025-05-29 16:53 ` Song Liu
2025-05-29 16:57 ` Alexei Starovoitov
2025-05-29 17:05 ` Song Liu
2025-05-30 14:20 ` Mickaël Salaün
2025-06-02 9:41 ` Christian Brauner
2025-06-03 9:46 ` Jan Kara
2025-06-03 12:49 ` Mickaël Salaün
2025-06-03 21:13 ` Jan Kara
2025-05-29 17:38 ` Al Viro
2025-05-29 18:00 ` Song Liu
2025-05-29 18:35 ` Al Viro
2025-05-29 19:46 ` Song Liu
2025-05-29 20:15 ` Al Viro
2025-05-29 21:07 ` Song Liu
2025-05-29 21:45 ` Al Viro
2025-05-29 22:13 ` Song Liu
2025-05-29 23:10 ` Al Viro
2025-05-30 0:42 ` Song Liu
2025-05-30 12:20 ` Mickaël Salaün
2025-05-30 18:43 ` Al Viro
2025-05-31 8:39 ` Mickaël Salaün
2025-06-02 9:32 ` Christian Brauner
2025-05-30 18:55 ` Song Liu
2025-05-31 8:40 ` Mickaël Salaün
2025-05-31 14:05 ` Tingmao Wang
2025-06-01 23:33 ` Song Liu
2025-06-04 0:58 ` Tingmao Wang
2025-06-02 9:30 ` Christian Brauner
2025-06-02 9:27 ` Christian Brauner
2025-06-02 13:27 ` Song Liu
2025-06-02 15:40 ` Alexei Starovoitov
2025-06-02 21:39 ` Song Liu
2025-05-28 22:26 ` [PATCH bpf-next 4/4] selftests/bpf: Add tests for bpf " Song Liu
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